Chapter 2 — The Nature of Deductive Reasoning
This chapter is now split into one page per lesson, based on the teaching plan’s terms and concepts. Each page is designed for homework: vocabulary, key rules, a step-by-step helper, a worked example, and common mistakes.
Lesson one-pagers
| Lesson | Topic | One-pager |
|---|---|---|
| 1 | Conditional Statements | Open |
| 2 | Definitions | Open |
| 3 | Direct Proof | Open |
| 4 | Indirect Proof | Open |
| 5 | A Deductive System | Open |
| 6 | Some Famous Theorems of Geometry | Open |
What each one-pager contains
- Words to know — the exact vocabulary from the teaching plan.
- Concepts to know — the rules and big ideas.
- Formula / pattern — what to apply.
- Homework helper — “if the problem asks this, do this.”
- Worked example — a model to copy in style.
- Watch out — the mistakes to avoid.
Chapter 2 in one sentence
Deductive reasoning links if–then statements into proofs; definitions, postulates, and theorems turn geometry from guessing into a system.